MATERIAL & SIZE: This unisex sun visor hat is made of 100% polyester. It is lightweight, adjustable, sweat-absorbing, and portable.One size fits men's ,women's, teenagers and adults head circumference of 20.5-24.8 inches ADJUSTABLE VELCRO: This visor has an adjustable velcro. No matter what you do, you can adjust the sun visor hats to a comfortable size.Adjustable back closure, is very suitable for most head shapes, and it meets all the requirements for comfort and funct QUICK-DRYING & SWEAT-ABSORBING: This visor is designed to provide quick drying during the summer. The built-in sweatband is made of quick-drying fabric, which can quickly absorb sweat, guide moisture to the outer layer to keep you cool and dry even during intense workouts or hot summer days SUN PROTECTION: The Sports Sun Visor features a 2.95in (7.5cm) brim, providing reliable protection against harmful UV rays. This ensures the safety of your face and eyes during outdoor activities, allowing you to enjoy the outdoors without worrying about sun damage.Hollow head structure design, the head has a wide circular air space, not pressure hair, accelerate heat dissipation and air permeability WIDELY USE & HIGH QUALITY: This sun visor hat is a great choice for regular daily use, great for golf, volleyball, tennis, pickleball,running, jogging, sports, working outside, gardening, yard work, concerts, festivals, bbq, tailgating, vacation, the beach, lake, pool, or anytime you want to feel instantly cooler